WIP: Adding contexts dynamically for IPython notebooks.
WIP: Add jigna.angular.compile.
More WIP. I don't really know where I'm going.
Barebones commit with ipython notebook working.
Bring back the iframe solution.

This somehow works perfectly now that we don't start a new tornado
loop. We don't have to deal with the case of jquery messing with ipython
either, neither do we have to worry about global scoping of the
template's context.
Remove jigna.angular.compile
Add more sophisticated method to find a new port.
Minor change to the mayavi webgl demo
Add a `size` option to display_jigna method.

Also move the mayavi webgl demo.
Merge pull request #32 from enthought/ipython-notebook

Integration with IPython notebook